Preparation, characterization and enhanced visible light photocatalytic activities of polyaniline/Bi3NbO7 nanocomposites

► PANI modified Bi3NbO7 nanoparticles were prepared by a simple chemisorption approach. ► They showed enhanced visible light photocatalytic activities for the RhB degradation. ► Holes were found as the main oxidation species in the RhB decomposition process. ► The synergetic effect between PANI and Bi3NbO7 enhanced the photocatalytic activity.